Which formula is used to determine the present value (PV) of a one-time cash flow? PV of a one-time cash flow = Amount of cash flow/1-(1+r)"/ PV of a one-time cash flow = Amount of cash flow * 1*(1+r)n PV of a one-time cash flow = Amount of cash flow * 1-(1+r)"/ PV of a one-time cash flow = Amount of cash flow * 1/(1+r)